Display device

Abstract

A display device for preventing a damage of an electrode contact portion is disclosed. The display device includes a display area, on which an organic light emitting diode including a first electrode, an organic layer, and a second electrode is positioned, and a non-display area positioned outside the display area. The non-display area includes an electrode contact portion in which the second electrode and a low potential voltage line are connected to each other through at least one connection pattern. The electrode contact portion includes a passivation layer including a plurality of passivation holes exposing the at least one connection pattern, and an overcoat layer including an overcoat hole exposing the passivation layer.

What is claimed is: 
     
       1. A display device, comprising:
 a display area on which an organic light emitting diode including a first electrode, an organic layer, and a second electrode is positioned; and 
 a non-display area positioned outside the display area, the non-display area including an electrode contact portion in which the second electrode and a low potential voltage line are connected to each other through at least one connection pattern, 
 wherein the electrode contact portion includes:
 a passivation layer including a plurality of passivation holes exposing the at least one connection pattern; and 
 an overcoat layer including an overcoat hole exposing the passivation layer, and 
 
 wherein the plurality of passivation holes are formed such that an entire perimeter of the plurality of passivation holes is longer than a perimeter of the overcoat hole, or an area of inclined portions of the plurality of passivation holes is greater than an area of the inclined portion of the overcoat hole. 
 
     
     
       2. The display device of  claim 1 , wherein the plurality of passivation holes is disposed inside the overcoat hole. 
     
     
       3. The display device of  claim 1 , further comprising:
 a first connection pattern positioned on the low potential voltage line and contacting the low potential voltage line; and 
 a second connection pattern positioned on the first connection pattern and contacting the first connection pattern. 
 
     
     
       4. The display device of  claim 3 , wherein the second connection pattern contacts the first connection pattern along inclined portions of the plurality of passivation holes. 
     
     
       5. The display device of  claim 3 , wherein the passivation layer is positioned between the first connection pattern and the second connection pattern,
 wherein the plurality of passivation holes exposes the first connection pattern. 
 
     
     
       6. The display device of  claim 5 , wherein the second electrode is positioned on the second connection pattern and contacts the second connection pattern. 
     
     
       7. The display device of  claim 1 , wherein the first electrode is an anode, and the second electrode is a cathode. 
     
     
       8. The display device of  claim 1 , wherein the plurality of passivation holes has a stripe planar shape or a dot planar shape.